certs/blacklist: fix const confusion

Fixes commit 2be04df5668d ("certs/blacklist_nohashes.c: fix const confusion
in certs blacklist")

Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
diff --git a/certs/blacklist.h b/certs/blacklist.h
index 150d82d..1efd6fa 100644
--- a/certs/blacklist.h
+++ b/certs/blacklist.h
@@ -1,3 +1,3 @@
 #include <linux/kernel.h>
 
-extern const char __initdata *const blacklist_hashes[];
+extern const char __initconst *const blacklist_hashes[];